Flexible closure



May 25 1926. 1,585,644

E. H. BINNS ET AL FLEXIBLE CLOSURE Filed Feb. 18. 1925 INVENTOBSPatented May 25, 192e.

UNITEDA STATES 1,585,644 "PATENT oFFcE.

EDWARD iBINNSS AND RAIJPH H. BINNS, EITTSBUBGH, PENNSYLVANIA, ANDWILLIAM ,A. DE HART, F TEANEQK, NEW JERSEY; SAID DE HABTASSIGNOR T0 SAIDEDWARD H. BINNS AND SAID IiALPI-I H. BINNS, BOTH OF PITTSBURGH,

rnNNsYLvANu.

FLEXIBLE cLosUnn.

Application filed. February 18.. 1925. Serial No. 10,061.

The present invention relates to improve ments in the type of iiexibleclosures having flexible strips or stringers ycarrying interlockingfastening-devices and a sliding cam p device for moving said fasteningdevices into and out of interlocmng engagement. Forms of such astructure are shown.4 in earlier applications, Ser. No. 682,022, filedDecember 21, 1923 and Ser. No. 724,355,

n@ tiled July 5, 1924:. rllhe invention o1 the present applicationcomprises an improved form of cam. slider for operating the fasten ingdevices, and an improved latching device for securing the slider againstmovement.

.In order that the invention may be fully understood it will first bedescribed with reference to Vthe accompanying drawings and afterwardsjpointed out more particularly in the annexed claims.

n@ y lln said drawings: y

'Figure 1 is a front elevation of a flexible closure embodying thepresent invention;

Figure 2 is a similar view showing the combined latchv plate and pullmember in open position extended above the slider;

Figure 3 is a similar view with the comloined latch plate and pullmember extended below the slider in position i'or opening the closure; Vy

Figure d is an edge elevation of the device with the Vparts in theposition shown in f'Figure 1;

.Figure 5 is a similar view with the parts in the position shown inFigure 2;'

.35 Figure 6 is a lower end view of the slider in the position shown inFigure l;y and Fi re 7 is a-detail plan view taken on the line 7-7 ofFigure 6. p

,1n the type of nexible closure tol which en the presentinventionrelate's, vtwo exible strips or stringers f1, 2 are formed attheir inner edges with beads or thickened portions 3 upon which are4secured interlocking fastening devices. A

Each'interlocking fastening device is preferably formed with a U-shapedyoke` 10 'i embracing and compressed upon the beaded or thickened edgey3 of a exible Stringer, va narrow neck 12, a forked hook 13, and the il@opposite riding lugs or shoulders 15. The

specic form and operation of the fasteni ing devices of the preferredconstruction will be more fully understood by reference to tlf-hg aboveynamed application Ser. No. 724,- o

The operating cam slider lis preferably constructed as set forth in theabove named application Ser; No. 724,355 of a back-plate 20 and afore-plate 21 mounted in spaced relation upon a binderpost 22. The innerfaces of the lback-plate and `fore-plate are providedwith controllinggrooves 25 separated by a central guide ribv 26. rllhe riding lugs ofthe fastening devices operate in the controlling grooves 25.

It will be observed thatthe upper edges of the back-plate and ore-pla 21are cut out or recessed at between the central longitudinal part ofthe'slider and the outwardly daring wings containingthe diverging upperportions of the grooves 25. 1t willbe understood that in the operationof thek slider of this type upon the described fastening devices, thefastening devices are controlled 'in their movements into and out oflocking engagement by the riding lugs 15 sliding in the grooves 25. The'recesses 30 in the back-plate and fore-plate or the slider provide freespace for the movement of the bifurcated hooks of the fastening devicesvas they re directed into the open upper 1ends of the slider channels.In eii'ect the laterally diverging wings or sides oi' the 'back-plateand fore-plate containing the upper ends of the controlling grooves 25,are extended a little beyond the edge walls of their supporting members,thereby giving the controlling grooves a chance to get each fasteningdevice under accurate control before the hooks can come in contact withan edge wall.

35 is a swivel plate freely pivoted upon tains the latch and pull memberin closed position upon the swivel plate.

The free endof the latch and pull member 38 is also provided with an.inwardly presented bifurcated or two-part detent 45 adapted to straddlethe lug 46 on the lower edge of the fore-plate 21. This two-part detent45 closes over the lower open ends l devices against either downward orupward displacement.

It will be observed that the detent of L@latch plate 38engages thefastening devices this closed interlockin of t while the latter areengaged or interlocked, so that the strain of the' slider latch will befirmly `resisted by the co-operative strength of the 'fastening devices.'lfhis ar` rangement entirely obviates the defect of some prior devicesin which a slider locking device engages individual fastening devices indisengaged position. The bifur- Vcated detent 4:5 in straddling the luv/i serves to prevent lateral movement o the swivel plate 35 and theparts are held in position by the engageinentof the snap ip 40 with themember 38 at 39.

The improved slider having recessed upper edges to preventinterferencewith the interlocking members in the locking motion andthe novel form ofslider locking device which cooperates with the riding lugs of thefastening devices are of importance in simgllisfying and improving theconstruction type of flexible closure.

It will be understood that the broad idea of the combined latch plateand pull member hingedto a swivel plate is covered by our above namedapplication, Ser. No. 7 24,- 355, but that the specific details of theimproved form of this latch plate and pull member with its detentdirectly engaging interlocked fastening devices are claimed in theresent case..

e claimz- I l. In a flexible closure or fastener, thecombination withflexible stringers carrying spaced interlocking fastening devices formedwith riding lugs or shoulders, of

an operating slider formed with internal.

controllin grooves engaging said riding lugs or' oulders and Vthereby*positively controlling the movements of the fastening de vices, theupper ed es of the slider walls b emg recessed and the grooved wall)portions projecting beyondsaid recesses to control said fasteningdevices without interference with the slider walls.`

2. In a exible closure or fastener, the

combination of flexible stringers carryingspaced interlocking fasteningdevices formed' with riding lugs or shoulders, of an operating sliderformed with a back-plate and foreplate rigidly attached to ether intheir central long1tudinalfplane an formed upon their inne'i` faces withlaterally diverging controlling grooves engaging said 'spaced therebyavoid interference between the fastening devices and the slider.

3. In a flexible closure 0r fastener, `the combination with flexiblestringere carrying spaced yinterlocking fasteningdevices, of anactuating slider embracing and sliding upon said fastening devices foreffecting their engagement and disengagement, a swivel platepivotedrupon said slider, and a latch plate hinged upon said swivelplate and formed with an inwardly presented detent adapted to engage the,fasteningv devices in interlocked position. f

4. In a flexible closure or fastener, the combination with flexiblestringers carrying spaced interlocking fastening devices formed withriding lugs or shoulders, of an operating slider formed with controllinggrooves engaging said riding lugs or shoulders, a swivel plate pivotedupon said slider, and a latch plate hinged upon one end of said swivelplate and', formed with an inwardl presented detent ada ted to bepresented, across the path of sai riding lugs or shoulders. r

5. In a exible closure or fastener, the combination with flexiblestringere carrying spaced interlocking fastening devices formed withriding lugs or shoulders, of an operating slider formed with controllinggrooves engaging saidriding lugs or shoulders, a swlvel plate plvotedupon saidslider, alatch plate'hinged upon one end of said swivel plateand formed with an inwardly presented detent adapted to be.

combination with flexiblestringers carryingl spaced interlockingfastemngl devices formed with riding lugs or shoulders, of an operatingslilder formed with controlling grooves. engaging said riding lugs orshoulders, a swivel late ivoted upon said slideg, a latch plate in edupon one end of said swivel plate and formed withI an inwardly presenteddetent adapted to be presented, across said -controlling grooves in thepaths of said riding lugs or shoulders, and a catch npon said swivelplate engaging said latch plate for holding the slider in lockedposition.

7. In a exible closure or fastener, thu combination withflexiblestringers carrying interlocking fastening formedwith riding lugsor shoulders, of an operating slider having a fore-plate and aback-plate formed with controlling grooves engaging said riding lugs orshoul- Dill devices 4 ders, said slider fore-plate, also having aagainst movement and project across said central longitudinallyprojecting lug at one controlling channels inthe ath of the rd- 10 endbetween the controlling grooves, a, swiving lugs or shoulders, an acatch upon el plate pivoted upon said slider, a latch said swivel plateengaging said latch plate.

plate hinged upon one end of said swivel plate and formed with aninwardly EDWARD H. BINNS. presented bifurcated locking detent adaptedRALPH H. BINNS. to embrace said lug to hold the swivel plate f WILLIAMA. DE HART.

